You didn't follow that advice about flipping it every few months and now you've worn a groove into it, and you think, "Well, I'm used to it.
Kau tak perlu mengikuti aturan untuk membalik matrasmu setiap bulan. dan sekarang, kau tak perlu ikuti aturan usang itu, dan kau berpikir, "Aku sudah memakainya.